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- Help me please, The total number of ways of selecting six coins out of 20 one rupee coins, 10 fifty paise coins and 7 twenty-five paise coins is:
The total number of ways of selecting six coins out of 20 one rupee coins, 10 fifty paise coins and 7 twenty-five paise coins is:
- Option 1)
28
- Option 2)
56
- Option 3)
37C6
- Option 4)
None of these
Answers (1)
As learnt in
Theorem of Combination -
Each of the different groups or selection which can be made by taking r things from n things is called a combination.
- wherein
Where
Total coins=37
Number of selections=37C6
Option 1)
28
This option is incorrect.
Option 2)
56
This option is incorrect.
Option 3)
37C6
This option is correct.
Option 4)
None of these
This option is incorrect.
View full answer
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